^ well I found this excerpt from Modern Architecture & Design News today so apperently the project is still expected to go forward:
Ecological housing building COR in Miami, Florida, USA by architects from the Oppenheim office will be built in 2010. Except using solar panels, own wind turbines in a hyper-efficient shell of the building. Tower is a complex with offices, fitnes studio or diverse residential apartments.
Oppenheim's website with the COR slides ( click on projects at the bottom / then 3rd row, 1st pic to view) :
http://www.oppenoffice.com/index2.htm